Cavendish Elithorn, senior director of the OFT's Goods and Consumer Group, explained that 'people are frustrated about being asked to pay for paying.'

He added 'consumers find it harder to shop around and find the best deal if they have to invest time and effort in discovering surcharges. This also weakens competition between retailers which is bad news for the UK economy.'

Which? use the budget airlines as examples, but online IT retail has plenty offenders too. The price you see is the price you pay on our sites. We look forward to transparent prices from others soon.